Dental instrument.



No. 737,616. PATENTED SEPT. 1, 1903. H. B. HARRELL.

DENTAL INSTRUMENT.

APPLICATION FILED .TUNE 20, 1903.

N0 MODEL.

UNTTED STATES Patented September 1, 1903.

HARDY B. HARRELL, OF GAINESVILLE, TEXAS.

DENTAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent N o. 737,616, datedSeptember 1, 1903.

Application tiled .Tune 20, 1903.

To all whom it may concern,.-

Be it known that I, HARDY B. HARRELL, a citizen oftheUnitedStates,residing at Gainesville,in the countyof Cooke and State of Texas,have invented certain new and useful Improvementsin Dental Instruments;andIdo hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters of referencemarked thereon.

The present invention has for its object to provide a device for dentaluse in which a suitable instrument or piece of wood may be firmlyclutched and securely held at the desired angle to reach difficultcavities and surfaces of the teeth in excavating cavities, scaling 0Etartar, and polishing difficult surfaces, thereby supplying a want inthe dental profession as well as a much needed instrument for the peoplein `general for cleaning the teeth.

The invention consists in a dental instrument constructed substantiallyas shown in the drawings and hereinafter described and claimed.

Figure l of the drawings is a sectional elevation of a dental instrumentconstructed in accordance with my invention; Fig. 2, perspective viewsin detail of the wood point, the upper end of the clamping-rod, and thebifurcated end of the tubular shank.

In the accompanying drawings, A represents a suitable handle of wood,metal, rubber, or any other preferred material and of any desirableshape, said handle having a central bore extending axially through itand in which fits a tubular guide B. This guide B has a circumferentialflange a, which overlaps the outer end of the handle, and that part ofthe tubular guide extending above the iiange is bifurcated to provideclamping-jaws C, which extend out at an acute angie to each other andare provided with concave seats o for the instrument that is to be held,such as piece of Wood, as shown at D, when used for cleaning teeth orother instru- Serial No. 162,323. (No model.)

ment or device used in the dental profession required to be held at anangle to reach difficult cavities and surfaces of the tooth. Aclamping-rod E extends through the tubular guide B and has an eye c atits end, through which the piece of wood D engages, and the opposite endof the rod is screw-threaded, as shown at d, with which engages ascrew-nutF, which nut forms the extremity of the handle. In turningthenut in the proper direction the clamping-rod will be drawn in thedirection of the nut and the wood piece drawn tightly against theconcave seats of the clampingjaws and the wood piece firmly held inposi-` tion.

It is evident that any changes or modification in the details ofconstruction may be resorted to without in any way affecting theessential features of the invention such as would corne Within ordinarymechanicaljudgment.

I-Iaving now fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. A dental-instrument holder comprising a suitable handle, aclamping-rod having an eye at its end for the instrument to engage, atubular guide for the rod having clampingjaws at its end, and means foradjusting longitudinally said clamping-rod, substantially as and for thepurpose set forth.

2. A dental-instrument holder comprising a suitable handle, a tubularguide extending through the same, a clamping-rod engaging the guide andhaving screw-threads at its end and a tightening-nut engaging saidscrewthreads, an eye upon the opposite end of the rod, and clamping-jawsupon the end of the tubular guide, substantially as and forthe purposedescribed.

In testimony whereof I affix my signature in presence of two witnesses.

HARDY B. HARRELL.

Witnesses:

I-I. E. ELDEIDGE, W. P. MIDKEEE.

